<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<style>
    div {
        color: aqua;
        font-size: 16px;
        background: aliceblue;
        width: 300px;
        height: 300px;
    }
</style>
<body>
    <div>你好</div>
    <span>不是很好</span>
    <p>1</p>
    <h1>2</h1>
</body>
</html>